Description

Diphenylphosphinic Acid is a versatile organophosphorus compound characterized by its phosphinic acid functional group flanked by two phenyl rings. This structure makes it a valuable intermediate and ligand in advanced chemical synthesis, offering unique reactivity and coordination properties. It is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty materials sectors who require precise building blocks for complex molecule development.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of novel active pharmaceutical ingredients (APIs), particularly those targeting neurological and metabolic diseases.
• Catalyst & Ligand Synthesis: Used to create specialized phosphine-based ligands for transition metal catalysis, enhancing reaction efficiency in cross-coupling and hydrogenation processes.
• Agrochemical Development: Acts as a building block for modern herbicides, fungicides, and plant growth regulators, contributing to improved crop protection solutions.
• Flame Retardant Synergist: Employed in the formulation of advanced flame-retardant systems for polymers and engineering plastics.
• Coordination Chemistry: Functions as a chelating agent for metal ions, useful in extraction processes and the preparation of metal-organic frameworks (MOFs).
• Organic Synthesis Reagent: Utilized in various organic transformations, including phosphorylation reactions and as a stabilizing agent for sensitive intermediates.

Basic Information

Product Name	Diphenylphosphinic Acid
CAS No.	1707-03-5
Molecular Formula	C12H11O2P
Molecular Weight	218.19 g/mol
Synonyms	Diphenylphosphinous Acid; P,P-Diphenylphosphinic Acid; DPPA; Diphenylphosphine Oxide; Hydroxydiphenylphosphine Oxide; (Hydroxy)(diphenyl)phosphine Oxide; Phenylphosphinic Acid, Diphenyl Derivative; NSC 403697
EINECS	216-944-1

Quality Control

Our Diphenylphosphinic Acid is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via FT-IR and NMR spectroscopy, to ensure it meets exacting standards for research and industrial use. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	158 - 162 °C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.